Amakawa Haruto, a twenty year old university student, loses his life when the bus he is on gets into an accident. As his consciousness begins to fade, his one regret is not telling his childhood friend, Miharu, how he felt. She'd disappeared after their high school entrance ceremony.
Now we move to the slums of the Kingdom of Beltrum. In a corner of a filthy shack, a boy named Rio moans and wakes from a nightmare. He has lived only to take revenge upon a certain man, but now, in his mind, suddenly there are flashes of another version of himself living in a world he's never seen before—the memories of Amakawa Haruto.
I-It's not like that! She asked me to—
-ليس الأمر كما ترين! لقد طلبت مني أن
D-Das stimmt nicht.
¡Te equivocas! Ella me pidió que…
Mais non !
N-Non è andata così, è lei che mi ha chiesto di—
N-Não é nada disso!
Foi ela quem me pediu para—
Да нет же! 
Она попросила меня...